bad/missing config values for the Plesk server running the whole thing. I just followed the directions here: https://vb.3dlat.com/

You can configure PHP to have a separate error log file for each VirtualHost definition. The trick is knowing exactly how to set it up, because you can’t touch the configuration directly without breaking Plesk. Every domain name on your (dv) has its own directory in /var/www/vhosts. A typical directory has the following top level directories:

cgi-bin/conf/error_docs/httpdocs/httpsdocs/...and so on

You’ll want to create a vhost.conf file in the domain directory’s conf/ folder with the following lines: